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Comprehensive rewrite establishing the harness engineering narrative across the entire repository. README (EN/ZH/JA): added "The Model IS the Agent" manifesto with historical proof (DQN, OpenAI Five, AlphaStar, Tencent Jueyu), "What an Agent Is NOT" critique, harness engineer role definition, "Why Claude Code" as masterclass in harness design, and universe vision. Consistent framing: model = driver, harness = vehicle. docs (36 files, 3 languages): injected one-line "Harness layer" callout after the motto in every session document (s01-s12). agents (13 Python files): added harness framing comment before each module docstring. skills/agent-philosophy.md: full rewrite aligned with harness narrative.
128 lines
4.9 KiB
Markdown
128 lines
4.9 KiB
Markdown
# s09: Agent Teams
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`s01 > s02 > s03 > s04 > s05 > s06 | s07 > s08 > [ s09 ] s10 > s11 > s12`
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> *"一人で終わらないなら、チームメイトに任せる"* -- 永続チームメイト + 非同期メールボックス。
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>
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> **Harness 層**: チームメールボックス -- 複数モデルをファイルで協調。
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## 問題
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サブエージェント(s04)は使い捨てだ: 生成し、作業し、要約を返し、消滅する。アイデンティティもなく、呼び出し間の記憶もない。バックグラウンドタスク(s08)はシェルコマンドを実行するが、LLM誘導の意思決定はできない。
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本物のチームワークには: (1)単一プロンプトを超えて存続する永続エージェント、(2)アイデンティティとライフサイクル管理、(3)エージェント間の通信チャネルが必要だ。
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## 解決策
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```
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Teammate lifecycle:
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spawn -> WORKING -> IDLE -> WORKING -> ... -> SHUTDOWN
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Communication:
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.team/
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config.json <- team roster + statuses
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inbox/
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alice.jsonl <- append-only, drain-on-read
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bob.jsonl
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lead.jsonl
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+--------+ send("alice","bob","...") +--------+
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| alice | -----------------------------> | bob |
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| loop | bob.jsonl << {json_line} | loop |
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+--------+ +--------+
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^ |
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| BUS.read_inbox("alice") |
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+---- alice.jsonl -> read + drain ---------+
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```
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## 仕組み
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1. TeammateManagerがconfig.jsonでチーム名簿を管理する。
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```python
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class TeammateManager:
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def __init__(self, team_dir: Path):
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self.dir = team_dir
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self.dir.mkdir(exist_ok=True)
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self.config_path = self.dir / "config.json"
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self.config = self._load_config()
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self.threads = {}
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```
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2. `spawn()`がチームメイトを作成し、そのエージェントループをスレッドで開始する。
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```python
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def spawn(self, name: str, role: str, prompt: str) -> str:
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member = {"name": name, "role": role, "status": "working"}
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self.config["members"].append(member)
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self._save_config()
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thread = threading.Thread(
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target=self._teammate_loop,
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args=(name, role, prompt), daemon=True)
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thread.start()
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return f"Spawned teammate '{name}' (role: {role})"
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```
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3. MessageBus: 追記専用のJSONLインボックス。`send()`がJSON行を追記し、`read_inbox()`がすべて読み取ってドレインする。
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```python
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class MessageBus:
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def send(self, sender, to, content, msg_type="message", extra=None):
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msg = {"type": msg_type, "from": sender,
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"content": content, "timestamp": time.time()}
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if extra:
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msg.update(extra)
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with open(self.dir / f"{to}.jsonl", "a") as f:
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f.write(json.dumps(msg) + "\n")
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def read_inbox(self, name):
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path = self.dir / f"{name}.jsonl"
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if not path.exists(): return "[]"
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msgs = [json.loads(l) for l in path.read_text().strip().splitlines() if l]
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path.write_text("") # drain
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return json.dumps(msgs, indent=2)
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```
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4. 各チームメイトは各LLM呼び出しの前にインボックスを確認し、受信メッセージをコンテキストに注入する。
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```python
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def _teammate_loop(self, name, role, prompt):
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messages = [{"role": "user", "content": prompt}]
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for _ in range(50):
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inbox = BUS.read_inbox(name)
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if inbox != "[]":
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messages.append({"role": "user",
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"content": f"<inbox>{inbox}</inbox>"})
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messages.append({"role": "assistant",
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"content": "Noted inbox messages."})
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response = client.messages.create(...)
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if response.stop_reason != "tool_use":
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break
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# execute tools, append results...
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self._find_member(name)["status"] = "idle"
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```
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## s08からの変更点
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| Component | Before (s08) | After (s09) |
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|----------------|------------------|----------------------------|
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| Tools | 6 | 9 (+spawn/send/read_inbox) |
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| Agents | Single | Lead + N teammates |
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| Persistence | None | config.json + JSONL inboxes|
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| Threads | Background cmds | Full agent loops per thread|
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| Lifecycle | Fire-and-forget | idle -> working -> idle |
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| Communication | None | message + broadcast |
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## 試してみる
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```sh
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cd learn-claude-code
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python agents/s09_agent_teams.py
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```
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1. `Spawn alice (coder) and bob (tester). Have alice send bob a message.`
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2. `Broadcast "status update: phase 1 complete" to all teammates`
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3. `Check the lead inbox for any messages`
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4. `/team`と入力してステータス付きのチーム名簿を確認する
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5. `/inbox`と入力してリーダーのインボックスを手動確認する
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